public static BufferedImage convertImageData(ImageData data) { BufferedImage bimg = null; int height = data.getHeight(), width = data.getWidth(); Object pixels = data.getData(); if (pixels instanceof int[] && data.getElementWidth() == 1) { int[] arr = (int[]) pixels; byte[] barray = new byte[arr.length * 3]; int k = 0; for (int j = 0; j < arr.length; j++) { int l = arr[j]; barray[k++] = (byte) (l & 0xFF); barray[k++] = (byte) ((l >>> 8) & 0xFF); barray[k++] = (byte) ((l >>> 16) & 0xFF); } ColorModel ccm = new ComponentColorModel( ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB), new int[] {8, 8, 8}, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE); DataBuffer bbuf = new DataBufferByte(barray, barray.length); SampleModel bmodel = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0}); WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0)); bimg = new BufferedImage(ccm, raster, false, new Hashtable()); } else if (pixels instanceof byte[] && data.getElementWidth() == 1) { // Assume gray scale model? byte[] arr = (byte[]) pixels; byte[] barray = new byte[arr.length * 3]; int k = 0; for (int j = 0; j < arr.length; j++) { byte l = arr[j]; barray[k++] = l; barray[k++] = l; barray[k++] = l; } ColorModel ccm = new ComponentColorModel( ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB), new int[] {8, 8, 8}, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE); DataBuffer bbuf = new DataBufferByte(barray, barray.length); SampleModel bmodel = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0}); WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0)); bimg = new BufferedImage(ccm, raster, false, new Hashtable()); } else { throw new RuntimeException("Unexpected data."); } return bimg; }
/** Convert standard img to a buffered image. */ public static BufferedImage convertImage(Image img) { int height = img.getHeight(null), width = img.getWidth(null); // FloatMatrix fm = new FloatMatrix( height, width ) ; PixelGrabber grabber = new PixelGrabber(img, 0, 0, width, height, false); try { grabber.grabPixels(); } catch (InterruptedException e) { System.out.println(e); } Object pixels = grabber.getPixels(); ColorModel cm = grabber.getColorModel(); BufferedImage bimg = null; // REVISIT Makes some unwarranted assumptions about the layout of the PixelGrabber data // as being either int (ARGB?) or byte (gray scale?) if (pixels instanceof int[]) { int[] arr = (int[]) pixels; byte[] barray = new byte[arr.length * 3]; int k = 0; for (int j = 0; j < arr.length; j++) { int l = arr[j]; barray[k++] = (byte) (l & 0xFF); barray[k++] = (byte) ((l >>> 8) & 0xFF); barray[k++] = (byte) ((l >>> 16) & 0xFF); } ColorModel ccm = new ComponentColorModel( ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB), new int[] {8, 8, 8}, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE); DataBuffer bbuf = new DataBufferByte(barray, barray.length); SampleModel bmodel = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0}); WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0)); bimg = new BufferedImage(ccm, raster, false, new Hashtable()); } else if (pixels instanceof byte[]) { // Assume gray scale model? byte[] arr = (byte[]) pixels; byte[] barray = new byte[arr.length * 3]; int k = 0; for (int j = 0; j < arr.length; j++) { byte l = arr[j]; barray[k++] = l; barray[k++] = l; barray[k++] = l; } ColorModel ccm = new ComponentColorModel( ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB), new int[] {8, 8, 8}, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE); DataBuffer bbuf = new DataBufferByte(barray, barray.length); SampleModel bmodel = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0}); WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0)); bimg = new BufferedImage(ccm, raster, false, new Hashtable()); } else { throw new RuntimeException("Unexpected data."); } return bimg; }
public BufferedImage read(int imageIndex, ImageReadParam param) throws IOException { checkIndex(imageIndex); readHeader(); if (iis == null) throw new IllegalStateException("input is null"); BufferedImage img; clearAbortRequest(); processImageStarted(imageIndex); if (param == null) param = getDefaultReadParam(); sourceRegion = new Rectangle(0, 0, 0, 0); destinationRegion = new Rectangle(0, 0, 0, 0); computeRegions( param, this.width, this.height, param.getDestination(), sourceRegion, destinationRegion); scaleX = param.getSourceXSubsampling(); scaleY = param.getSourceYSubsampling(); // If the destination band is set used it sourceBands = param.getSourceBands(); destBands = param.getDestinationBands(); seleBand = (sourceBands != null) && (destBands != null); noTransform = destinationRegion.equals(new Rectangle(0, 0, width, height)) || seleBand; if (!seleBand) { sourceBands = new int[colorPlanes]; destBands = new int[colorPlanes]; for (int i = 0; i < colorPlanes; i++) destBands[i] = sourceBands[i] = i; } // If the destination is provided, then use it. Otherwise, create new one bi = param.getDestination(); // Get the image data. WritableRaster raster = null; if (bi == null) { if (sampleModel != null && colorModel != null) { sampleModel = sampleModel.createCompatibleSampleModel( destinationRegion.width + destinationRegion.x, destinationRegion.height + destinationRegion.y); if (seleBand) sampleModel = sampleModel.createSubsetSampleModel(sourceBands); raster = Raster.createWritableRaster(sampleModel, new Point(0, 0)); bi = new BufferedImage(colorModel, raster, false, null); } } else { raster = bi.getWritableTile(0, 0); sampleModel = bi.getSampleModel(); colorModel = bi.getColorModel(); noTransform &= destinationRegion.equals(raster.getBounds()); } byte bdata[] = null; // buffer for byte data if (sampleModel.getDataType() == DataBuffer.TYPE_BYTE) bdata = (byte[]) ((DataBufferByte) raster.getDataBuffer()).getData(); readImage(bdata); if (abortRequested()) processReadAborted(); else processImageComplete(); return bi; }